EP 1090504 A1 20010411 - AUDIENCE RATING SYSTEM FOR DIGITAL TELEVISION AND RADIO
Title (en)
AUDIENCE RATING SYSTEM FOR DIGITAL TELEVISION AND RADIO
Title (de)
SYSTEM ZUR MESSUNG VON EINSCHALTQUOTEN FÜR DIGITALES FERNSEHEN UND RADIO
Title (fr)
SYSTEME DE CALCUL DU TAUX D'ECOUTE POUR TELEVISION ET RADIO NUMERIQUES
Publication
Application
Priority
- US 9910453 W 19990521
- US 8550198 A 19980527
- US 28975899 A 19990412
Abstract (en)
[origin: WO9962260A1] An audience rating system for digital television and radio, using identification codes in control streams (C) of time-multiplexed digital transmissions (12). When a television set (22) or radio, that is being monitored pursuant to the system is turned on and tuned to a channel, and each time that the channel is changed, an identification code for each audio, video or auxiliary digital stream of the channel is extracted from the control stream, and recorded along with the time. The time is also recorded when the television set or radio is turned off. This data makes it possible to determine what stations, channels, and programs members of the audience being monitored are watching or listening to at any particular time.
IPC 1-7
IPC 8 full level
H04H 9/00 (2006.01); H04H 60/37 (2008.01); H04H 60/40 (2008.01); H04N 5/00 (2006.01)
IPC 8 main group level
H04H 1/00 (2006.01)
CPC (source: EP US)
H04H 60/37 (2013.01 - EP); H04H 60/40 (2013.01 - EP); H04N 21/4112 (2020.08 - EP US); H04N 21/4263 (2013.01 - EP); H04N 21/434 (2013.01 - EP); H04N 21/44222 (2013.01 - EP US)
Citation (search report)
See references of WO 9962260A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI NL PT SE
DOCDB simple family (publication)
WO 9962260 A1 19991202; AU 4184599 A 19991213; BR 9909273 A 20001121; CA 2323937 A1 19991202; EP 1090504 A1 20010411
DOCDB simple family (application)
US 9910453 W 19990521; AU 4184599 A 19990521; BR 9909273 A 19990521; CA 2323937 A 19990521; EP 99925594 A 19990521